KR102076284B1 - Schaumbildung polycarbonate product manufacturing equipment - Google Patents

Abstract

The present invention is to produce a polycarbonate product of a certain size by drying, pulverizing, extruding, foaming, molding, cooling, film bonding and cutting the raw material in the form of granules, but by injecting high pressure nitrogen gas for foaming into the molten raw material The present invention relates to a manufacturing apparatus capable of realizing a reduction in weight and a reduction in manufacturing cost.
The apparatus for producing expanded polycarbonate products according to the present invention includes a dryer for drying raw materials to remove moisture, a pulverizer for pulverizing and mixing dried raw materials, an extruder for heating and crushing the pulverized raw materials and extruding them in a molten state. Gear pump to prevent backflow and transfer, Mixer in which molten raw material is foamed inside, Gas injector injecting high pressure nitrogen gas into the mixer to foam molten raw material, Polycarbonate produced by foaming raw material into plate Flattening the surface by rolling ejected mold machine, discharged plate-shaped polycarbonate, calender roll for processing to a certain thickness, cooling roll for transferring and cooling the rolled polycarbonate, and adhering the protective film to the surface of the polycarbonate being transported Primary roll of plate-shaped polycarbonate with adhesive roll and protective film The unit is characterized in that it comprises a width cutting machine, and a length cutting machine for dividing the polycarbonate of the first cut plate-like cut to a predetermined length.

Description

Schaumbildung polycarbonate product manufacturing equipment

The present invention relates to a device for producing a polycarbonate product by using a foaming method, and more particularly, by drying, pulverizing, extruding, foaming, molding, cooling, film-gluing, and cutting granular raw materials, The present invention relates to a manufacturing apparatus capable of producing a carbonate product and injecting high pressure nitrogen gas for foaming into a molten raw material to reduce the weight of the product and at the same time reduce the manufacturing cost.

In general, polycarbonate, which is a kind of thermoplastic plastic, has good electrical insulation and dimensional stability, has good digestibility and acid resistance, has high weather resistance, and has excellent impact resistance, and is used in various fields such as mechanical or electrical parts and safety helmets.

As a process for producing such a polycarbonate, an interfacial method of reacting an aromatic dihydroxy compound and phosgene at an interface by mixing an aqueous alkali solution of an aromatic dihydroxy compound and a halogen-based organic solvent and adding phosgene, and aromatic dihydroxy And a transesterification method for reacting a compound and a carbon diester in a molten state, and the related invention is related to a method for producing polycarbonate and a device for producing polycarbonate in Korea Patent Publication No. 10-2004-0030809. Patent No. 10-1129202, "Production apparatus and manufacturing method of polycarbonate resin, and" Production method of polycarbonate using a peeling device "of the Republic of Korea Patent Publication No. 10-2019-0046900 has been proposed and disclosed. .

In the above-mentioned Korean Patent Publication No. 10-2004-0030809, "Method for producing polycarbonate and apparatus for producing polycarbonate", a polycarbonate product is formed by melt-polymerizing an aromatic dihydroxy compound and a carbonic acid diester, A method and apparatus for producing end-capped polycarbonate by mixing with an end-capping agent at a pressure of about 760 mmHg or more have been proposed, and the above-described Korean Patent Application Publication No. 10-1129202 discloses an apparatus and preparation for polycarbonate resin. Method ”for preparing a polycarbonate resin using a transesterification reaction of an aromatic dihydroxy compound and an carbonate diester substituted or unsubstituted with an aliphatic dihydroxy compound selected from the group consisting of ethylene glycol, propylene glycol, butanediol and the like Device and method The invention has been proposed.

In addition, the method of preparing a polycarbonate using a peeling device of the Republic of Korea Patent Publication No. 10-2019-0046900, diaryl carbonate and an aromatic hydroxy compound are mixed in a mixing device, and the mixed compound is reduced and heated Inventions relating to the formation of polycarbonates by reaction in a reactor have been proposed.

However, the above-described conventional inventions produce a polycarbonate by using an exchange reaction, but present only a technique related to an apparatus or a method capable of reducing the amount of impurities introduced in the manufacturing process or minimizing a decrease in molecular weight. In this way, the performance of the manufactured polycarbonate is maintained at the same level as before, but there is a problem that it is not possible to realize a weight reduction and a cost reduction by reducing the amount of raw materials required for manufacturing.

Therefore, the present invention provides a device for manufacturing polycarbonate to replace PVC, which is mainly used as a material for light diffusion plate, and to reduce the amount of raw materials required for manufacturing, and to reduce the weight and cost. Invention is required.

Republic of Korea Patent Publication No. 10-2004-0030809 (2004. 04. 09) Republic of Korea Patent Publication No. 10-1129202 (2012. 03. 15) Republic of Korea Patent Publication No. 10-2019-0046900 (20.05. 07)

Apparatus for producing expanded polycarbonate product according to the present invention is a technique proposed to solve the problems of the conventional invention as described above,

Conventional inventions provide a technique for producing a polycarbonate using an exchange reaction and the like, but a device or method for reducing the amount of impurities introduced during the manufacturing process or minimizing a decrease in molecular weight.

These technologies alone can maintain the performance of the manufactured polycarbonate at the same level as before, but it is not possible to realize a reduction in the weight and cost of the product by reducing the amount of raw materials required for manufacturing. For that purpose.

The present invention to realize the above object,

A dryer for drying the granules to remove moisture; A mill for pulverizing and mixing the dried raw materials; An extruder for heating the pulverized raw material and extruding it in a molten state; A gear pump for conveying and preventing backflow of the extruded raw material; A mixer in which the molten raw material is foamed therein; A gas injector for injecting nitrogen gas at a high pressure into the mixer such that the molten raw material is foamed; A mold machine for discharging the polycarbonate produced by foaming the raw material into a plate; A calender roll for rolling the discharged plate-shaped polycarbonate to planarize the surface thereof and processing it to a constant thickness; A cooling roll for transferring and cooling the rolled polycarbonate; An adhesive roll for adhering a protective film to the surface of the polycarbonate to be transferred; A width cutting machine for first cutting a plate-shaped polycarbonate to which a protective film is bonded to a predetermined width; And a length cutting machine for secondly cutting the plate-shaped polycarbonate cut into a predetermined length. It proposes an apparatus for producing expanded polycarbonate product, characterized in that comprising a.

The manufacturing apparatus of the expanded polycarbonate product according to the present invention,

By providing polycarbonate instead of PVC, which is mainly used as a material of light diffusion plate, the effect of improving the strength and transmittance of light diffusion plate and delaying yellowing phenomenon occurs.

A gas injector for injecting high-pressure nitrogen gas into the mixer into which the molten raw material is introduced in the process of manufacturing polycarbonate is provided so that the molten raw material is foamed inside the mixer, thereby reducing the amount of raw material used and the product weight. The effect of realizing the reduction of cost and the reduction of cost is realized.

1 is a block diagram of an apparatus for producing a foamed polycarbonate product according to the present invention.
Figure 2 is an exemplary view showing a state in which an external organ is installed inside the dryer.
Figure 3 is an exemplary view showing a cylindrical tube installed in a form surrounding the external organ.
4A shows an exemplary embodiment of a grinder.
4B is an exemplary view showing another embodiment of the grinder.
Figure 5 is a schematic view showing a state in which the auxiliary dryer, auxiliary mill, auxiliary extruder and the supply unit is added to the present invention.

The present invention relates to an apparatus for producing a polycarbonate product using a foaming method,

As shown in Figure 1, the dryer 100 for drying the raw material to remove moisture; A grinder 110 for grinding and mixing the dried raw materials; An extruder 120 for heating the pulverized raw material and extruding it in a molten state; A gear pump 130 which prevents the backflow of the extruded raw material and conveys it; A mixer 140 in which the molten raw material is foamed therein; A gas injector 150 for injecting high-pressure nitrogen gas into the mixer 140 so that the molten raw material is foamed; A mold machine 160 for discharging the polycarbonate produced by foaming the raw material into a plate; A calender roll 170 for flattening the surface by rolling the discharged plate-shaped polycarbonate and processing it to a constant thickness; Cooling roll 180 for transporting and cooling the rolled polycarbonate; An adhesive roll 190 for adhering a protective film to a surface of the polycarbonate to be transferred; A width cutter 200 for first cutting a plate-shaped polycarbonate to which a protective film is bonded to a predetermined width; And, a length cutting machine 210 for dividing the first cut polycarbonate of the plate-like cut into a predetermined length; It relates to an apparatus for producing expanded polycarbonate product, characterized in that comprising a.

Hereinafter, with reference to the accompanying drawings will be described embodiments of the present invention;

First, the dryer 100 is a device for removing moisture by drying the raw material provided in the form of granules, an inlet for the input of the raw material supplied from the outside is formed at the top, a space for temporarily storing the raw material introduced through the inlet It is formed therein, the outlet for the dried raw material is discharged to the outside may be formed on one side of the lower or lower.

That is, the raw material introduced into the interior of the dryer 100 through the inlet is moved downward and undergoes a drying and discharging process, and an outlet formed at one side of the lower or lower portion of the dryer 100 prevents the discharge of the raw material being dried. And, it should be composed of a structure that can be opened or closed automatically or manually to discharge the dried raw material.

At this time, the dryer 100 is a dehumidifying dryer which is a method of drying the raw material by dehumidifying the air of the high temperature and high humidity injected into the inside and drying the raw material by direct injection of hot air into the drying method of any one of the hot air dryer. It may be of any kind, and may be any one of commercially available dehumidifying dryers or hot air dryers, but may be configured as follows in order to minimize the loss of the internal space and to ensure efficiency in the drying process.

That is, as shown in Figure 2, the dryer 100 is a direction perpendicular to the inner center of the dryer 100 in a state in which a plurality of injection holes 102 formed in a plurality of layers formed along the circumferential direction of the outer circumference It may be configured to include a supply pipe 101 to be installed, an external engine for supplying external air to the supply pipe 101 by using a blower, and a heating heater for heating the external air introduced into the external engine.

Therefore, the outside air introduced into the outside engine and heated by the heater is injected into the dryer 100 through the plurality of injection holes 102 formed on the outer periphery of the supply pipe 101 to be in contact with the raw material and at the same time the dryer. By raising the temperature inside the (100) the raw material is dried in a direct or indirect manner.

At this time, the supply pipe 101 is supported by a lower end or interrupted by an external organ and may be installed in a vertical direction in the inner center of the dryer 100, but one end of the plurality of supports fixed to the inner wall surface of the dryer 100 It may be installed to be stably supported by being connected to the other end portion.

In addition, as shown in Figure 3, the inside of the dryer 100 is formed in a plurality of through-hole 104 in the outer periphery layer, the cylindrical shape is formed to have a diameter larger than the diameter of the supply pipe 101 Since the cylindrical tube 103 is installed in a form surrounding the supply tube 101, even when a large amount of raw material is introduced, the cylindrical tube 103 may be heated evenly without interfering with the injection of hot air in a state spaced apart from the injection hole 102 at a predetermined distance. .

At this time, the cylindrical tube 103 is preferably configured to have a lower end or an openable form so as to surround the supply pipe 101, the raw material is not introduced between the supply pipe 101 and the cylindrical tube 103. It is preferable that the top is configured to be closed or closed.

In addition, the plurality of through-holes 104 formed in a layer on the outer periphery of the cylindrical tube 103 is injected through a plurality of injection holes 102 formed on the outer periphery of the supply pipe 101 of the cylindrical tube 103 The outside air filling the inside can be evenly diffused into the interior of the dryer 100 to improve the heating effect of the raw material by the outside air.

On the other hand, the method of supplying the raw material from the outside to the interior of the dryer 100 may be a method using a conveying device such as a conveyor belt and a manual supply method by the operator, but the raw material discharged through the outlet after drying the crusher As a method of transferring to 110, it is preferable to adopt a method using a conveying device such as a conveyor belt.

In addition, the grinder 110 is a device for crushing and mixing the raw material dried in the dryer 100, the same as the dryer 100, an inlet for the input of the raw material transferred through the transfer device is formed at the top, the inlet A space for temporarily storing the raw material introduced through the formed inside is formed, the discharge port for the pulverized raw material discharged to the outside may be formed on one side of the bottom or bottom.

That is, the raw material introduced into the grinder 110 through the inlet is moved downward and undergoes a crushing and mixing process, and the discharge port formed at the lower end of the grinder 110 prevents the discharge of the raw material being pulverized and pulverized. It shall be constructed in such a way that it can be opened or closed automatically or manually to discharge the raw materials.

At this time, the inside of the crusher 110 should be provided with a grinding means such as a grinding blade for crushing and mixing the inputted raw material, the form of such a grinding means is provided in any one of the various embodiments described below Can follow.

That is, the present invention may be configured to be provided with a pair of grinding blades that are configured of the same size and installed side by side at the same height and rotated inside the grinder 110, to grind the raw material introduced therebetween.

In addition, as shown in Figure 4a, the present invention is installed side by side in the interior of the grinder 110, a pair of primary grinding blades 111 for grinding the raw material introduced into the interior of the grinder 110 first. ) Is installed, and below the primary grinding blade 111 may be configured of a double structure in which a pair of secondary grinding blades 112 for crushing the primary crushed raw material secondly is installed. The size and the spacing between the pair of primary grinding blades 111 of the pair may be formed larger and wider than the size and the spacing between the pair of secondary grinding blades 112 to allow the raw material to be gradually reduced to a smaller size. .

In addition, the present invention is installed horizontally inside the grinder 110 and rotates, may be configured to be provided with one or more grinding blades for crushing the raw material, when a plurality of grinding blades are installed a plurality of large grinding The blades are spaced apart at regular intervals and form a plurality of layers, or a plurality of small grinding blades are installed at the same height to form a layer, and again a plurality of small grinding blades are installed at the same height to form a different layer. It can be configured in various forms.

In addition, as shown in FIG. 4B, the present invention provides a pair of vertical grinding blades 113 having the same shape as the primary grinding blade 111 or the secondary grinding blade 112 in the grinder 110. ) May be installed in parallel with each other, and a single or a plurality of horizontal grinding blade 114 is installed in the horizontal direction below.

In addition, the extruder 120 is a device for heating the pulverized raw material and extruding it in a molten state. An inlet through which the raw material discharged from the crusher 110 is input is formed at one side of the upper end, and the raw material injected through the inlet gradually melts. And the space to be transported is formed inside, the outlet of the molten raw material discharged to the outside is formed at the end of the other side opposite to one side where the inlet is formed.

That is, the raw material introduced into the extruder 120 through the inlet is moved in a horizontal direction from one side to the other side and undergoes a melting process, and the outlet formed at the other end surface of the extruder 120 is the extruder 120. It must be kept open at all times during operation.

At this time, the extruder 120 adopts a configuration of a general extrusion apparatus provided with a heater for heating and a screw for extrusion inside the cylindrical cylinder, the shape is modified in any one of the following various embodiments Can be implemented.

That is, the extruder 120 may be configured such that the cylindrical cylinder is divided into a first conveying part having a relatively large diameter and a second conveying part having a smaller diameter than the first conveying part, and proportionally to the diameter of the first conveying part. The first screw provided therein may be larger in size than the second screw provided in the second transfer part.

Therefore, the solid raw material conveyed along the longitudinal direction of the first conveying part by the rotation of the first screw can be concentrated and melted in the process of entering into the second conveying part having a relatively small diameter. Heater to heat the will further promote the melting in the overall process of the raw material is transferred.

That is, the raw material conveyed in the extruder 120 may be gradually melted according to the pressure generated by the rotation of the screw and the temperature in the cylinder, and the diameter of the first conveying part and the second conveying part as described above. The difference acts as a factor in promoting the melt rate during the transfer process.

In addition, the extruder 120 has a pair of screws that are symmetrical to each other inside the first conveying portion is installed side by side, a single screw is installed in the second conveying portion is engaged with any one of the pair of screws. In this case, the raw material in the solid state is melted in the first conveying part and then extruded through the second conveying part.

At this time, the pair of screws installed in a symmetrical form inside the first conveying portion is configured to increase the diameter toward the second conveying portion side to further promote the melting rate of the raw material in the solid state, The extrusion force to the second conveying portion having a diameter smaller than the diameter of the first conveying portion can be improved.

On the other hand, the raw material in the liquid state is passed through the extruder 120 in a molten state to improve the fluidity is prevented backflow by the gear pump 130 installed on the outlet side of the extruder 120 and at the same time the mixer 140 The gear pump 130 is configured to have the same structure as that of a known gear pump 130 that is configured to engage a pair of gears, and thus, further description thereof will be omitted.

In addition, the mixer 140 is a device for foaming the molten raw material in a state having a uniform temperature, the inlet for the raw material is transferred from the gear pump 130 is formed at one end, through the inlet A space in which the injected raw materials are uniformly mixed and then foamed is formed therein, and an outlet through which the uniformly mixed raw materials are discharged to the outside is formed at the other end.

That is, the raw material in the molten state that is introduced into the mixer 140 through the inlet is moved in a horizontal direction from one side to the other side and undergoes a mixing process in which the overall temperature is uniformly dispersed, the mixer 140. Since the other end of the configuration of any one of the known nozzle shape, the effect of the discharge of the raw material can be implemented in the same way as the known nozzle.

Specifically, the mixer 140 may be provided with a mixer portion configured to cross the plurality of upward diagonal portions and the plurality of downward diagonal portions in an 'X' shape to form a plurality of flow paths therebetween. The mixer unit uniformly dissociates and recombines the raw materials in the molten state, which are moved in the horizontal direction by the gear pump 130 while being fixed inside the mixer 140, thereby homogenizing the raw materials.

Therefore, since the raw material in the molten state passing through the mixer unit is uniformly formed throughout the composition, the temperature, etc., when the injection or injection through the other end of the mixer 140 in the form of a nozzle, such as the improvement of the strength of the product The quality can be improved, and defect rate such as streaks can be prevented, and the defective rate can be reduced such that dimensional stability is improved.

In addition, the gas injector 150 is a device for injecting a blowing agent into the interior of the mixer 140, and thus the injection port for communicating the inside and the outside of the mixer 140 on one side of the inlet side, such as the top of the mixer 140 A quantity of blowing agent that is formed to foam the molten raw material may be supplied from the gas injector 150.

In this case, as a blowing agent for foaming a raw material such as polystyrene, propane, butane, pentane, and the like are generally used. In the process of manufacturing a polycarbonate product, a foaming process may not be used. By using the gas as a blowing agent to increase the foaming rate to 50% or more, it is possible to reduce the amount of raw materials used, and to further reduce the weight of the expanded polycarbonate product to be produced.

In addition, the molder 160 is a device for discharging the polycarbonate formed by foaming the raw material in the form of a plate, a space in which the inlet for the polycarbonate in the foamed state is formed on one side or the top of the upper portion, and temporarily stored It is formed inside, the discharge port discharged to the outside is formed at the bottom.

At this time, the molder 160 may be connected to the supply unit 220 for supplying the raw material in the molten state to the inside of the molder 160, the raw material in the molten state supplied from the supply unit 220 is expanded polycarbonate product It can be applied directly to the surface of the.

Specifically, as shown in Figure 5, the present invention is the same or similar to the dryer 100, but the miniaturized auxiliary dryer 105, the same or similar to the grinder 110, but miniaturized auxiliary mill 115 and The same or similar to the extruder 120, but may be configured to include a miniaturized sub-extruder 121, it is formed through the sub-dryer 105, the sub-crusher 115 and the sub-extruder 121 in sequence The molten raw material is supplied to the inside of the mold machine 160 through the supply unit 220 may be applied to one side, such as the top of the expanded polycarbonate product, or may be applied to more than one side.

In addition, the calendar roll 170 is a device for rolling a plate-like polycarbonate discharged from the mold machine 160, a plurality of rollers that rotate adjacent to each other is installed horizontally below the mold machine 160 or inclined downward It is configured so as to process the discharged plate-shaped polycarbonate to a certain thickness and smoothly flatten the surface.

Specifically, the calendar roll 170 includes a first roller that rotates in a forward direction, a second roller that rotates in a reverse direction, and a third roller that rotates in a forward direction, and has a plate shape discharged downward from the mold machine 160. The polycarbonate is to be sandwiched between the first roller and the second roller is rotated and must be disposed below the mold machine 160, the second roller that rotates in a different direction from the first roller and the third roller By the configuration of the plate-like polycarbonate is in close contact with the outer periphery of the second roller is moved to the third roller side.

In this case, the forward direction generally means a clockwise direction, the reverse direction means a counterclockwise direction, in the present invention, the direction from the calendar roll 170 toward the cooling roll 180 is called a forward direction, and vice versa. The direction is called reverse.

In addition, the cooling roll 180 is a device for transporting and cooling the rolled polycarbonate, and comprises a plurality of rollers arranged in parallel with each other at regular intervals and rotated in the same direction and speed, each roller is inside Cooled by cooling water, such as brine, filled in or supplied through the supply line, the plate-shaped polycarbonate in contact with the outer periphery is cooled.

In addition, the adhesive roll 190 is a device for adhering the protective film to the surface of the polycarbonate to be transported, arranged side by side in the vertical direction in parallel with each other, and rotated in the opposite direction, as long as they rotate at the same speed It consists of a pair of rollers to allow the protective film to adhere to the plate-like polycarbonate surface passing between.

In addition, the width cutting machine 200 is a device for primary cutting the plate-shaped polycarbonate bonded to the protective film to a predetermined width, the length cutting machine 210 is fixed by secondary cutting the first cut plate-shaped polycarbonate. The device is divided into lengths, such that the width cutting machine 200 and the length cutting machine 210 are sequentially passed, and each of the divided polycarbonates is configured to be loaded in the loading unit so that they can be immediately taken out.

The above-described embodiments are provided by way of example so that the technical spirit of the present invention can be sufficiently delivered to those skilled in the art to which the present invention pertains. It is not limited and may be embodied in other forms.

Parts not related to the description are omitted in the drawings in order to clearly describe the present invention, in the drawings, the width, length, thickness, etc. of the components may be exaggerated or reduced for convenience.

Also, like reference numerals denote like elements throughout the specification.

100: dryer
101: supply pipe 102: injection hole
103: cylinder tube 104: through hole
105: auxiliary dryer
110: grinder
111: 1st grinding blade 112: 2nd grinding blade
113: vertical grinding blade 114: horizontal grinding blade
115: Auxiliary Grinder
120: extruder
121: auxiliary extruder
130: gear pump
140: Mixer
150: gas injector
160: Molding Machine
170: calendar roll
180: cooling roll
190: adhesive roll
200: width cutting machine
210: length cutting machine
220: supply part

Claims (6)

Dryer 100 for drying the raw material to remove moisture;
A grinder 110 for grinding and mixing the dried raw materials;
An extruder 120 for heating the pulverized raw material and extruding it in a molten state;
A gear pump 130 which prevents the backflow of the extruded raw material and conveys it;
A mixer 140 in which the molten raw material is foamed therein;
A gas injector 150 for injecting high-pressure nitrogen gas into the mixer 140 so that the molten raw material is foamed;
A mold machine 160 for discharging the polycarbonate produced by foaming the raw material into a plate;
A calender roll 170 for flattening the surface by rolling the discharged plate-shaped polycarbonate and processing it to a constant thickness;
Cooling roll 180 for transporting and cooling the rolled polycarbonate;
An adhesive roll 190 for adhering a protective film to a surface of the polycarbonate to be transferred;
A width cutter 200 for first cutting a plate-shaped polycarbonate to which a protective film is bonded to a predetermined width; And,
A length cutting machine 210 for dividing the first cut polycarbonate cut into a predetermined length; Characterized in that configured to include,
The dryer 100,
A supply pipe 101 installed in a vertical direction at an inner center of the dryer 100 in a state in which a plurality of injection holes 102 formed along a circumferential direction of the outer circumference are formed in a plurality of layers;
An external organ (not shown) for supplying external air to the supply pipe 101 using a blower;
A heating heater (not shown) for heating the outside air introduced into the external engine; And,
A cylindrical cylinder tube 103 formed in a plurality of through holes 104 on an outer circumference and formed to have a diameter larger than the diameter of the supply tube 101 to surround the supply tube 101; Apparatus for producing expanded polycarbonate product, characterized in that comprising a.
delete The method of claim 1,
The grinder 110,
A pair of primary grinding blades 111 installed to be parallel to each other and grinding the raw materials introduced into the grinder 110 first; And,
A pair of secondary grinding blades 112 installed below the primary grinding blades 111 to crush the primary crushed raw materials secondly; Characterized in that comprises a,
The size and the spacing between the pair of primary grinding blades 111 of the expanded polycarbonate product, characterized in that formed larger and wider than the size and the spacing between the pair of secondary grinding blades 112 Manufacturing device.
The method of claim 1,
The grinder 110,
A pair of vertical grinding blades 113 are installed side by side inside each other,
A device for producing a foamed polycarbonate product, characterized in that a single or a plurality of horizontal grinding blades 114 are installed in the horizontal direction below.
The method of claim 1,
Inside the mixer 140,
The plurality of upward diagonal lines and the plurality of downward diagonal lines cross each other in an 'X' shape to form a plurality of flow paths therebetween, and move horizontally by the gear pump in a fixed state inside the mixer 140. Apparatus for producing a foamed polycarbonate product, characterized in that provided with a mixer (not shown) for separating and recombining the raw material in the molten state.
The method of claim 1,
The manufacturing apparatus of the expanded polycarbonate product,
An auxiliary dryer 105 which is the same as or similar to the dryer 100 but is downsized;
An auxiliary grinder 115 which is the same as or similar to the grinder 110 but is miniaturized;
A compact extruder 121 which is the same as or similar to the extruder 120 but is miniaturized; And,
A supply unit 220 supplying a raw material in a molten state formed through the auxiliary dryer 105, the auxiliary grinder 115, and the compact extruder 121 sequentially into the mold machine 160; Apparatus for producing expanded polycarbonate product, characterized in that comprising a.

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